[INFO] updating cached repository https://github.com/adamreeve/rlox
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 2864b671d11bf6dea02edebba28852193b1ce582
[INFO] testing adamreeve/rlox against 1.38.0 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fadamreeve%2Frlox" "work/builds/worker-8/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/adamreeve/rlox on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/adamreeve/rlox
[INFO] finished tweaking git repo https://github.com/adamreeve/rlox
[INFO] tweaked toml for git repo https://github.com/adamreeve/rlox written to work/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/adamreeve/rlox already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-8/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] 8efd9a9b406a0e0f93cdeb1d3e99e9c3282a50f85e96b53ff773821bd6ad2069
[INFO] running `"docker" "start" "-a" "8efd9a9b406a0e0f93cdeb1d3e99e9c3282a50f85e96b53ff773821bd6ad2069"`
[INFO] [stderr]    Compiling num-traits v0.2.5
[INFO] [stderr]    Compiling libc v0.2.40
[INFO] [stderr]    Compiling textwrap v0.9.0
[INFO] [stderr]    Compiling atty v0.2.10
[INFO] [stderr]    Compiling clap v2.31.2
[INFO] [stderr]    Compiling num-traits v0.1.43
[INFO] [stderr]    Compiling enum-primitive-derive v0.1.2
[INFO] [stderr]    Compiling rlox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/errors.rs:32:32
[INFO] [stderr]    |
[INFO] [stderr] 32 |     fn cause(&self) -> Option<&Error> {
[INFO] [stderr]    |                                ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/scanner.rs:278:53
[INFO] [stderr]     |
[INFO] [stderr] 278 | fn is_some_where<T: Copy>(x: Option<T>, predicate: &Fn(T) -> bool) -> bool {
[INFO] [stderr]     |                                                     ^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(T) -> bool`
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `StringInterner`
[INFO] [stderr]  --> src/string_interner.rs:9:1
[INFO] [stderr]   |
[INFO] [stderr] 9 | pub struct StringInterner {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/string_interner.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     pub fn new() -> StringInterner {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `intern`
[INFO] [stderr]   --> src/string_interner.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 |     pub fn intern(&mut self, string: String) -> InternedString {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `resolve`
[INFO] [stderr]   --> src/string_interner.rs:37:5
[INFO] [stderr]    |
[INFO] [stderr] 37 |     pub fn resolve(&self, symbol: InternedString) -> &str {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `from_str`
[INFO] [stderr]   --> src/string_interner.rs:54:5
[INFO] [stderr]    |
[INFO] [stderr] 54 |     fn from_str(string: &str) -> InternedStringRef {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.74s
[INFO] running `"docker" "inspect" "8efd9a9b406a0e0f93cdeb1d3e99e9c3282a50f85e96b53ff773821bd6ad2069"`
[INFO] running `"docker" "rm" "-f" "8efd9a9b406a0e0f93cdeb1d3e99e9c3282a50f85e96b53ff773821bd6ad2069"`
[INFO] [stdout] 8efd9a9b406a0e0f93cdeb1d3e99e9c3282a50f85e96b53ff773821bd6ad2069
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-8/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] e6a1133959954da6e27673792b0e0eb262263eef04d65f7682dadcc02daa0de4
[INFO] running `"docker" "start" "-a" "e6a1133959954da6e27673792b0e0eb262263eef04d65f7682dadcc02daa0de4"`
[INFO] [stderr]    Compiling rlox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `Read`
[INFO] [stderr]   --> src/chunk.rs:51:27
[INFO] [stderr]    |
[INFO] [stderr] 51 |     use std::io::{Cursor, Read, Write};
[INFO] [stderr]    |                           ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/errors.rs:32:32
[INFO] [stderr]    |
[INFO] [stderr] 32 |     fn cause(&self) -> Option<&Error> {
[INFO] [stderr]    |                                ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/scanner.rs:278:53
[INFO] [stderr]     |
[INFO] [stderr] 278 | fn is_some_where<T: Copy>(x: Option<T>, predicate: &Fn(T) -> bool) -> bool {
[INFO] [stderr]     |                                                     ^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(T) -> bool`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.98s
[INFO] running `"docker" "inspect" "e6a1133959954da6e27673792b0e0eb262263eef04d65f7682dadcc02daa0de4"`
[INFO] running `"docker" "rm" "-f" "e6a1133959954da6e27673792b0e0eb262263eef04d65f7682dadcc02daa0de4"`
[INFO] [stdout] e6a1133959954da6e27673792b0e0eb262263eef04d65f7682dadcc02daa0de4
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-8/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "test" "--frozen"`
[INFO] [stdout] ec22114602cd597c4bad7fb9c05519135513e7f1b76f76f238a2c6094af02f1d
[INFO] running `"docker" "start" "-a" "ec22114602cd597c4bad7fb9c05519135513e7f1b76f76f238a2c6094af02f1d"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rlox-036c9f7a317ce477
[INFO] [stdout] 
[INFO] [stdout] running 27 tests
[INFO] [stdout] test chunk::test::test_write_constant ... ok
[INFO] [stdout] test run_length_encoding::test::test_store_complex ... ok
[INFO] [stdout] test run_length_encoding::test::test_store_run ... ok
[INFO] [stdout] test scanner::tests::test_parse_identifiers ... ok
[INFO] [stdout] test scanner::tests::test_incrementing_line_count ... ok
[INFO] [stdout] test run_length_encoding::test::test_iterate_complex ... ok
[INFO] [stdout] test chunk::test::test_write_multiple_instruction ... ok
[INFO] [stdout] test scanner::tests::test_parse_keywords ... ok
[INFO] [stdout] test run_length_encoding::test::test_iterate_single_item ... ok
[INFO] [stdout] test run_length_encoding::test::test_iterate_run ... ok
[INFO] [stdout] test chunk::test::test_write_instruction ... ok
[INFO] [stdout] test scanner::tests::test_parse_multiple_characters ... ok
[INFO] [stdout] test scanner::tests::test_parse_single_characters ... ok
[INFO] [stdout] test chunk::test::test_write_more_than_256_constants ... ok
[INFO] [stdout] test run_length_encoding::test::test_empty ... ok
[INFO] [stdout] test run_length_encoding::test::test_iterate_empty ... ok
[INFO] [stdout] test string_interner::test::interned_string_refs_hash_equal ... ok
[INFO] [stdout] test scanner::tests::test_skipping_whitespace_and_comments_before_more_tokens ... ok
[INFO] [stdout] test scanner::tests::test_skipping_whitespace_and_comments_before_eof ... ok
[INFO] [stdout] test scanner::tests::test_parsing_unary_expression ... ok
[INFO] [stdout] test scanner::tests::test_parsing_binary_numeric_expression ... ok
[INFO] [stdout] test string_interner::test::interned_string_refs_hash_not_equal ... ok
[INFO] [stdout] test string_interner::test::interned_string_refs_not_equal ... ok
[INFO] [stdout] test string_interner::test::interned_string_refs_equal ... ok
[INFO] [stdout] test string_interner::test::interned_string_not_equal ... ok
[INFO] [stdout] test string_interner::test::interned_string_resolve ... ok
[INFO] [stdout] test string_interner::test::interned_string_equal ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 27 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "ec22114602cd597c4bad7fb9c05519135513e7f1b76f76f238a2c6094af02f1d"`
[INFO] running `"docker" "rm" "-f" "ec22114602cd597c4bad7fb9c05519135513e7f1b76f76f238a2c6094af02f1d"`
[INFO] [stdout] ec22114602cd597c4bad7fb9c05519135513e7f1b76f76f238a2c6094af02f1d